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ID 19043
Eprint ID
19043
FullText URL
Thumnail 71_259.pdf 5.43 MB
Title Alternative
On the Effects of Altering the Parameters of Electrical Stimulating Currents upon Motor Responses
Author
Kusumoto, Tsuyoshi
Abstract
The fixed points of the human cerebral motor area were stimulated electrically by square waves and the effects of altering parameters upon motor response were studied. 1) Under constant frequency of stimulation longer duration required a lower threshold. It was shown also by subcortical stimulation but the threshold was higher than that by cortical stimulation. 2) Under constant frequency of stimulation, changing of stimulating duration produced no altering of motor response at all. 3) Under constant duration of stimulation, low frequency produced a movement of distal joint but higher frequency produced proximal joint. 4) At the low frequencies, the responses followed the rate of stmulation; at higher frequencies smooth movements occurred; at very high frequencies quick jerky movements were observed. 5) At high frequencies, higher threshold produced also a motor response of proximal joint. From this fact it is regarded that the altering of motor response is not influenced by liminal voltage. From above mentioned the mechanism of altering effects upon motor responses caused by changing of stimulating frequencies is easily cleared. The reasons are due to the intricating arrangement of representations in motor cortex and the differences of threshold in every center depend upon number of cells, which are required for the motor response.
Published Date
1959-01-31
Publication Title
岡山医学会雑誌
Publication Title Alternative
Journal of Okayama Medical Association
Volume
volume71
Issue
issue1
Publisher
岡山医学会
Publisher Alternative
Okayama Medical Association
Start Page
259
End Page
276
ISSN
0030-1558
NCID
AN00032489
Content Type
Journal Article
Official Url
https://www.jstage.jst.go.jp/article/joma1947/71/1/71_1_259/_article/-char/ja/
Related Url
http://www.okayama-u.ac.jp/user/oma/
language
日本語
Copyright Holders
岡山医学会
File Version
publisher
Refereed
True
Eprints Journal Name
joma